XSImplementation, DOM Level 3 Core and LS implementations
* and PSVI implementation.
* See also the Document Object Model (DOM) Level 3 Core Specification.
* @author Elena Litani, IBM
* @version $Id: DOMXSImplementationSourceImpl.java,v 1.3 2004/04/23 21:45:04 mrglavas Exp $
*/
public class DOMXSImplementationSourceImpl
extends DOMImplementationSourceImpl {
/**
* A method to request a DOM implementation.
* @param features A string that specifies which features are required.
* This is a space separated list in which each feature is specified
* by its name optionally followed by a space and a version number.
* This is something like: "XML 1.0 Traversal Events 2.0"
* @return An implementation that has the desired features, or
* null if this source has none.
*/
public DOMImplementation getDOMImplementation(String features) {
DOMImplementation impl = super.getDOMImplementation(features);
if (impl != null){
return impl;
}
// if not try the PSVIDOMImplementation
impl = PSVIDOMImplementationImpl.getDOMImplementation();
if (testImpl(impl, features)) {
return impl;
}
// if not try the XSImplementation
impl = XSImplementationImpl.getDOMImplementation();
if (testImpl(impl, features)) {
return impl;
}
return null;
}
/**
* A method to request a list of DOM implementations that support the
* specified features and versions, as specified in .
* @param features A string that specifies which features and versions
* are required. This is a space separated list in which each feature
* is specified by its name optionally followed by a space and a
* version number. This is something like: "XML 3.0 Traversal +Events
* 2.0"
* @return A list of DOM implementations that support the desired
* features.
*/
public DOMImplementationList getDOMImplementationList(String features) {
final Vector implementations = new Vector();
// first check whether the CoreDOMImplementation would do
DOMImplementationList list = super.getDOMImplementationList(features);
//Add core DOMImplementations
for (int i=0; i < list.getLength(); i++ ) {
implementations.addElement(list.item(i));
}
DOMImplementation impl = PSVIDOMImplementationImpl.getDOMImplementation();
if (testImpl(impl, features)) {
implementations.addElement(impl);
}
impl = XSImplementationImpl.getDOMImplementation();
if (testImpl(impl, features)) {
implementations.addElement(impl);
}
return new DOMImplementationListImpl(implementations);
}
}